Air valve for electronics enclosures
US9482349B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2014 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | May 18, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/20727
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An air valve includes a frame and a sheet of thin material. The frame may have an outlet-side member configured mounted on a fan housing and an inlet-side member rotatably coupled to the outlet-side member. The material may have top and bottom edges, and a plurality of folds perpendicular to the top and bottom side edges that divide the sheet into a plurality of sections. The material may be attached to the outlet-side member and the inlet-side member, and configurable between folded and expanded positions. An attraction between a magnetic component on the inlet-side member and a magnetic component on a rotating fan blade may cause the inlet-side member to rotate, moving the material into the folded configuration. When the fan blade is not rotating, a spring attached at a pivot point may cause the inlet-side member to rotate in an opposite direction, moving the material into the expanded position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.